Finding Diameter and Radius (Working Backward) Name: Hour:

Learning Target: I can use circumference of a circle to find the diameter or radius. Example: Solve for the missing length for each circle. Circumference = 18.84 cm Circumference = 21.98 in Circumference = 13π cm C = 2πr C = πd C = 2πr 18.84 cm = 2 • 3.14 • r 13π ft = 2 • π • r ... ................
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